Cyberduck is an open source FTP and SFTP (SSH Secure File Transfer) browser licenced under the GPL with an easy to use interface, integration with external editors and support for many Mac OS X system technologies such as Spotlight, Bonjour, the Keychain and AppleScript. It supports Public key authentication, Keyboard Interactive (PAM) Authentication, Support for various encryption ciphers (3DES, Blowfish, Twofish, AES, CAST) and Authentication algorithms (MD5, SHA1). It is available in English, Czech, Dutch, Finnish, French, German, Italian, Japanese, Korean, Norwegian, Slovak, Spanish, Chinese (Traditional and Simplified), Russian, Swedish, Danish, Polish, Hungarian, Indonesian, Catalan, Welsh, Thai, Turkish and Hebrew. It is written by David V. Kocher.